package com.xuecheng.manage_cms.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.stream.Collectors;

/**
 * 标题：
 * 作者：何处是归程
 * 时间：2020/3/12 - 14:24
 */
@Configuration
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)//激活方法上的 PreAuthorize注解
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
	//公钥
	private static final String PUBLIC_KEY = "publickey.txt";

	//定义JwtTokenStore，使用jwt令牌
	@Bean
	public TokenStore tokenStore(JwtAccessTokenConverter jwtAccessTokenConverter) {
		return new JwtTokenStore(jwtAccessTokenConverter);
	}

	//定义JJwtAccessTokenConverter，使用jwt令牌
	@Bean
	public JwtAccessTokenConverter jwtAccessTokenConverter() {
		JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
		converter.setVerifierKey(getPubKey());
		return converter;
	}

	/**
	 * 获取非对称加密公钥    Key
	 */
	private String getPubKey() {
		Resource resource = new ClassPathResource(PUBLIC_KEY);
		try {
			InputStreamReader inputStreamReader = new
					InputStreamReader(resource.getInputStream());
			BufferedReader br = new BufferedReader(inputStreamReader);
			return br.lines().collect(Collectors.joining("\n"));
		} catch (IOException ioe) {
			return null;
		}
	}

	//Http安全配置，对每个到达系统的http请求链接进行校验
	@Override
	public void configure(HttpSecurity http) throws Exception {
		//所有请求必须认证通过
		http.authorizeRequests()
				.antMatchers("/v2/api-docs", "/swagger-resources/configuration/ui",
						"/swagger-resources", "/swagger-resources/configuration/security", "/swagger-ui.html", "/webjars/**").permitAll()
				.anyRequest().authenticated();
	}
}